Federal Register: DHS IIRIRA waiver for Tucson-sector barrier/road work

On July 21, 2026, the Department of Homeland Security (DHS) published a Federal Register notice announcing a waiver determination under the Illegal Immigration Reform and Immigrant Responsibility Act (IIRIRA). The notice takes effect the same day and lets DHS waive specified federal (and referenced state/other) legal requirements to speed up the “expeditious construction” of barriers and roads in a defined segment of the border in the Border Patrol Tucson Sector.

For nearby communities and stakeholder groups, the practical question is what changes on the ground next—and what follow-on steps (including documentation, permitting, or legal challenges) emerge because the waiver covers major environmental and historic/cultural legal protections for the listed construction activities.

What DHS decided, and when it took effect

The notice (FR Doc. 2026-14604) states DHS “has determined” it is necessary to waive specified legal requirements to ensure expeditious construction of barriers and roads in the vicinity of the international land border in Arizona. DHS also states the determination takes effect on July 21, 2026.

Where the waiver applies: a monument-defined Tucson Sector boundary

DHS defines the covered “project area” using border monument numbers. The notice says the area starts at Border Monument 163 and extends east to Border Monument 140, in Arizona, within the Border Patrol Tucson Sector.

What gets waived for the covered barrier/road construction

DHS says the waiver applies in their entirety, but only with respect to the construction of physical barriers and roads (including, among other actions: accessing the project area; creating and using staging areas; conducting earthwork, excavation, fill, and site preparation; and installation and upkeep of physical barriers, roads, drainage/erosion controls, safety features, lighting, cameras, and sensors).

The notice then lists the statutes whose related legal requirements are waived for that covered construction, including major categories such as:

• Environmental review and impacts: National Environmental Policy Act (NEPA).
• Species, habitat, and wildlife protections: Endangered Species Act; Migratory Bird Treaty Act; Migratory Bird Conservation Act; National Fish and Wildlife Act of 1956; Fish and Wildlife Coordination Act.
• Water, air, and pollution controls: Clean Water Act (Federal Water Pollution Control Act); Clean Air Act; Safe Drinking Water Act; Noise Control Act; Solid Waste Disposal Act (as amended by the Resource Conservation and Recovery Act); Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
• Cultural, historic, and heritage resources: National Historic Preservation Act; Antiquities Act; Historic Sites, Buildings, and Antiquities Act; Archaeological Resources Protection Act; Paleontological Resources Preservation Act; Federal Cave Resources Protection Act of 1988; Archaeological and Historic Preservation Act; and Native American Graves Protection and Repatriation Act.
• Land/parks/rivers/trails/wilderness authorities: National Trails System Act; Wild and Scenic Rivers Act; Federal Land Policy and Management Act; Wilderness Act; National Wildlife Refuge System authorities; National Park Service authorities; National Parks and Recreation Act provisions; Arizona Desert Wilderness Act provisions; National Forest Management Act; and Multiple Use and Sustained Yield Act.
• Procedural and other named requirements: Administrative Procedure Act, among other listed statutes.

The notice also says this waiver does not revoke or supersede any other IIRIRA section 102(c) waiver determinations, and it states DHS reserves authority to execute further waivers as needed.

Who is affected—and what to watch next

This Federal Register notice is a concrete change in how DHS can streamline barrier/road construction for the defined Border Monument 163–140 segment in Arizona’s Tucson Sector. It is most likely to affect organizations and agencies that normally rely on— or participate in—environmental review and historic-preservation compliance processes tied to the named statutes.

What to watch next:

• Field implementation in the defined segment: whether DHS moves from a waiver determination into operational steps for the covered barrier/road construction.
• Follow-on documentation and explanations: even when certain legal requirements are waived for listed activities, stakeholders often look for how environmental and historic/cultural impacts will be addressed in practice.
• Potential legal or administrative challenges: because the waiver spans multiple environmental and cultural-resource statutes, affected parties may seek court review of the waiver’s scope or application.

DHS’s notice itself does not claim any construction is already complete; it announces what the waiver allows for the covered barrier/road activities within the monument-defined project area.

Sources

• Federal Register (GovInfo): FR Doc. 2026-14604
• Federal Register Public Inspection: FR Doc. 2026-14604